Feed-water heater and purifier



(No Model.)

VH. D. BARAGW-ANATI-I. EEED WATER HEATER AND PURIPIEE.

Ne. 402,645. Patented Mey 7,1889.

110.3 dife N. PETERS, Pholo-utmgrapher, washington. D. C.

UNITED STATES `PATENT OFFICE.

HENRY D. BARAGWANATH, oF oHIcAeo, ILLINOIS.

FEED-WATER HEATER-AND PURIFIER.

SPECIFICATION forming part of Letters Patent No. 402,645, dated May '7, 1889.

Application nera August 28,1838. sean No. 283,994. oto model.)

T5 @ZZ whom 'it may concern:

Be it known that I, HENRY D. BARAGWA- NATH, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented vcertain new-,and useful Improvements in Feed-Water Heaters and Purifiers, of`which the following is a specication.

This invention relates to improvements in feed-water heaters Vfor the water prior to being fed into the boiler, by removing the mud, lime, and scale forming substances usually held in solutionV in feed-water. Y

The prime object of this invention is to simultaneously heat and purify the water by passing it through' aV heating-chamber in a shallow stream, whereby the action of the heat is rendered most effectual in precipitating the scale-forming substances, as well as in raising the temperature of the water.

, Another object is to materially increase the time which the water is subjected to the action of the heat, and thereby promote the effectiveness ofY the heating and purifying operation by passing the water through the heating-chamber in a shallow stream and in a zigzag path from end to end of the heatingchamber.

A further object is to so connect the heater with the boiler as to avoid a siphon action upon the feed-water pipe, whereby the feed to the boiler maybe made by gravity without danger of feeding any sediment from the settling-chamber. I attain these objects' by the devices illustrated in the accompanying drawings, in which- Figure l is a central vertical section through the feed-water heater and settling-chamber embodying my invention; Fig. 2, a transverse vertical section thereof, chamber in elevation.

Similar letters of reference indicate the same parts in theseveral figures of the drawings.

Referring by letter to the accompanying drawings, A indicates a horizontal heater or chamber having' removable heads or end caps, B, bolted or otherwise secured thereto, in the vcenter of each of which is inserted a screwshowing the settlingplug, C, for permitting inspection of the in? terior of the boiler without necessitating the purifying and heatingV .shelf above from overilowingvat that end.

These shelves preferably rest upon ribs or lugs F, arranged along the side walls of the boiler, and extending from one side to the "other of the boiler in a substantially horizonttl plane, being slightly curved downwardly from a true horizontal position, so as to cause the water to flow toward the center thereof, as more clearly shown in Fig. 2, the shelf being merely set upon the ledges, and readily Vremovable therefrom when the end caps of the boiler are removed.

Steam is admitted into the heater through a pipe, G, while the water enters through pipe H, both at the top of the boiler, from whence the water flows successively over the inclined shelves in a zigzag path, and in a shallowrstream of substantially the entire width of the shelf, until it reaches the bottom shelf, from whence it falls into the lower part of the boiler, escaping therefrom into a settlin g-chamber, I, arranged beneath the boiler and connected therewith by a pipe, J, the open end of which extends up into the boiler nearly to the lower shelf, thus converting thev lower part of the boiler into a settlingchamber, from'whence the mud and other foreign substances may be blown off through the pipe K, leading from the bottom thereof near one end. The feed-water overiiowing the pipe J falls into the settling-chamber I upon a hollow cone-deflector, L, which protects the upper and open end of a short vertical pipe, M, the lower end of which opens in the settlingchamberl below the surface of the water therein, and with which pipe, near the upper end thereof, is connected the feed-pipe N leading to the boiler. lhe settlings from the overflow-water into this chamber sink to the bottom thereof, and are occasionally blown IOO off through the pipe t), thus relieving the chamber of the mud, sediment, and other foreign substances which have been released from the feed water during its passage through the heater, but not retained in the heater, thus acting in the nature of a safeguard and check on the heater, so as to insure the purity of the feed-water before its delivery to the boiler. The main portion of the impurities in the water, however, and especially the scale-forming substances, which are the most injurious to a boiler, are precipitated and retained upon the shelves D during the passage of the water across the saine, the broad and shallow stream rendering the precipitation effective in a maximum degree, and hence it is necessary at intervals to take out the shelves and remove the scales therefrom.

This heater is designed to be set at a sufficient height relative to the boiler to insure the feeding of the water thereto by gravity, the pipe N leading to the boiler being at a height of eighteen inches or two feet above the highest level of the water inv the boiler, and to prevent the siphon action of the feedwater whenever the continous feed is stopped I have provided the pipe M with the protected open end above its connection with the boiler feed-pipe, so that whenever the water in the settling-chamber falls below the level of the boiler feed-pipe N the feed of the water will cease, and the sediment fromthe bottom of the settling-chamber will not be drawn up and fed into the boiler by a siphon action, as would otherwise occur.

In conclusion, I may state that the shelves,

instead of being curved and independently removable, as shown, may be perfectly lflat with upturned side edges, and all formed into one frame, so as tobe removed simultaneouly from the heater, the essential feature being to provide the heater with reversely-inclined shelves, so as to cause the feed-water to traverse a zigzag path in passing through the heater.

' Having described my invention, what I claim, and desire to secure by Letters Patent,

l. The combination, with the feed-water heater, of a settling-chamber, a vertical pipe therein opening at both ends above and below the surface of the water, respectively, a hollow cone protecting the upper end thereof, and a feed-pipe leading to the boiler and connecting with said pipe below the upper protected end thereof, substantiallyv as described.

2. The combination, with a feed -water heater, of a series of reversely-inclined shelves located in the heating-chamber thereof, a settling-chamber and pipe connecting said chamber and heater and opening in the latter above the bottom thereof, a vertical pipe within said chamber open at both ends, the lower end only being submerged, a cone protecting the upper open end thereof, and a feed-pipe to the boiler connecting with said pipe below the upper protected end thereof, substantially as described.

HEIRY D. BARAGNVANATl-l.

Witnesses:

W. R. OMoHUNDRo, A. M. BENNETT. 

